1998 GMC Safari Owner's Manual - Page 292

I How To Check Power Steering Fluid Windshield Washer Fluid I ! 1 When the engine compartmentis cool, wipe the cap and What toUse the topof the reservoir clean, then unscrew the cap and wipe the dipstick with a clean rag. Replace the cap and When you need windshield washer fluid, be sure to read If completely tighten it. Then remove the cap again and the manufacturer's instructions before use.you will be operating your vehicle in an area where the temperature look at the fluid level on the dipstick. may fall below freezing, usea fluid that has sufficient The level should be the FULL COLD mark. If at protection against freezing. necessary, add only enough fluid to bring the level up to mark. the Adding Washer Fluid What to Use To determine what kind of fluid to use, see in "Recommended Fluids and Lubricants" the Index. Always usethe proper fluid. Failure to use the proper fluid can cause leaks and damage hoses and seals. Open the cap labeled WASHER FLUID ONLY. Add washer fluid until the tank is full.